fdo#81475 reorganization of writer's table toolbar

Change-Id: I3672fa8e32975723d58e92fe3eceafc2e8993646
Reviewed-on: https://gerrit.libreoffice.org/13267
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
(cherry picked from commit dd359cff8814ad7a9796f05cd21c9d98190898c2)
Reviewed-on: https://gerrit.libreoffice.org/13283
Reviewed-by: Yousuf Philips <philipz85@hotmail.com>
Tested-by: Yousuf Philips <philipz85@hotmail.com>